A Cook County Jail inmate was recovering Tuesday from a stabbing in a maximum-security wing of the Southwest Side complex.

Demtre Golden, 28, was taken to Mount Sinai Hospital for a wound to the chest. At least three other inmates are suspected in the attack, said Bill Cunningham, a spokesman for Cook County Sheriff Michael Sheahan, who runs the jail.

Golden was booked into the jail in June on a charge of failing to register as a sex offender. The motive for the attack is unclear, Cunningham said, but investigators are looking into whether it was related to his history as a sex offender or whether it was gang-related.